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input focus: calculate areas of intersection

This commit is contained in:
Connor Lane Smith 2011-10-26 12:14:50 +01:00
parent 70b3418e3e
commit dd29c5d480
1 changed files with 22 additions and 12 deletions
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34
dmenu.c
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@ -13,9 +13,10 @@
#endif
#include "draw.h"
#define INRECT(x,y,rx,ry,rw,rh) ((x) >= (rx) && (x) < (rx)+(rw) && (y) >= (ry) && (y) < (ry)+(rh))
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define INTERSECT(x,y,w,h,r) (MAX(0, MIN((x)+(w),(r).x_org+(r).width) - MAX((x),(r).x_org)) \
* MAX(0, MIN((y)+(h),(r).y_org+(r).height) - MAX((y),(r).y_org)))
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
typedef struct Item Item;
struct Item {
@ -513,19 +514,28 @@ setup(void) {
mh = (lines + 1) * bh;
#ifdef XINERAMA
if((info = XineramaQueryScreens(dc->dpy, &n))) {
int i, di;
int a, j, di, i = 0, area = 0;
unsigned int du;
Window w, dw;
Window w, pw, dw, *dws;
XWindowAttributes wa;
XGetInputFocus(dc->dpy, &w, &di);
if(w != root && w != PointerRoot && w != None && XGetWindowAttributes(dc->dpy, w, &wa))
XTranslateCoordinates(dc->dpy, w, root, wa.x, wa.y, &x, &y, &dw);
else
XQueryPointer(dc->dpy, root, &dw, &dw, &x, &y, &di, &di, &du);
for(i = 0; i < n-1; i++)
if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
break;
if(w != root && w != PointerRoot && w != None) {
do {
if(XQueryTree(dc->dpy, (pw = w), &dw, &w, &dws, &du) && dws)
XFree(dws);
} while(w != root && w != pw);
if(XGetWindowAttributes(dc->dpy, pw, &wa))
for(j = 0; j < n; j++)
if((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {
area = a;
i = j;
}
}
if(!area && XQueryPointer(dc->dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
for(i = 0; i < n; i++)
if(INTERSECT(x, y, 1, 1, info[i]))
break;
x = info[i].x_org;
y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
mw = info[i].width;